ATHENA MINERALOGY |
Mineral: | FERROFERRITSCHERMAKITE |
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Name: | Ferro-ferri-tschermakite |
Formula: | ▢{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 |
Crystal System: | Monoclinic |
Group: | Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Tschermakite group |
References: | AM 97 (2012), 2031; CM 35 (1997), 219 |
Comments: | ▢ = vacancy |
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